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-   -   Running staggered tires... (https://www.seccs.org/forums/showthread.php?t=3881)

JC 2005-11-16 02:53 PM

Running staggered tires...
 
I think this thread will get good...

http://forums.nasioc.com/forums/showthread.php?t=884632

245/45s out back and 225/45s up front

http://home.comcast.net/~sporqster/subaru.jpg

sperry 2005-11-16 03:14 PM

"Gee, why's my seat getting so hot?"

AtomicLabMonkey 2005-11-16 03:17 PM

Matched perfect and staggered special!

sperry 2005-11-16 03:22 PM

Quote:

Originally Posted by AtomicLabMonkey
Matched perfect and staggered special!

"Yeah, luckly my crew decided the best thing to help my natural understeer was more rear traction. We finished 8th today, without that great move in the tire selection, we might have been competative. We're hoping next race we'll be able to DNF, and we see a possible DNS next season if things keep going our way."

JC 2005-11-16 03:37 PM

Quote:

see your cool, every one here is calling me dumb for everying thinking about putting wider tires in the rear, my diff did break but it proly wan't for that reason, my prob was lunching it as hard as i can, now thats the problem.
haha

Nick Koan 2005-11-16 03:47 PM

Oh I get it, he hates his center diff.

AtomicLabMonkey 2005-11-16 03:54 PM

Quote:

Originally Posted by sperry
"Yeah, luckly my crew decided the best thing to help my natural understeer was more rear traction. We finished 8th today, without that great move in the tire selection, we might have been competative. We're hoping next race we'll be able to DNF, and we see a possible DNS next season if things keep going our way."

[DJ]

SPECIAAAL!!!

[/DJ]

tysonK 2005-11-16 04:24 PM

I'm guessing the main reason he did it was because it looks cool.

+1 for looking cool.

Dean 2005-11-16 05:44 PM

That thread is painful to read. I suggest we cross post it to corner carvers for a proper flaming... :lol:

Nick Koan 2005-11-16 09:06 PM

Hah, so this wasn't for performance advantage (duh) and he fesses up :p

http://forums.nasioc.com/forums/show...2&postcount=38

Quote:

Originally Posted by Sporqster
OK time to fess up....

Here's the REAL reason I'm running bigger tires in the rear... rims are offset, 7.5" and 8.5". didn't realize this when I picked them up used. No biggie, they still fit fine with 225's all around, which is what I had been running. THEN Turner Motorsports (who races BMW's) is selling 245/45-17's and 225/45-17's leftover racing tires for $60 each - what a steal... bought them without thinking much about it, thinking I would put them on my wife's Porsche (which also has 7.5" and 8.5" front/rear 17" rims). She, in the meantime bought 16" rims with hoosiers already mounted on them. Fine I'll just mount them on my own rims! it wasn't until I got them mounted on the rims and started stacking them on the trailer that I realized the rears were so much bigger... So I made up a rationalization to use them... after all they looked cool on the car I thought.

Prolly asking a lot to put 245's on a 7.5" rim... guess I'll have to get some 225's for the rear...

So suppose I did burn up the diff- what would be the symptoms and would you ever be able to tell? You wouldn't think that 26 extra revolutions per mile would wear out a gear, at least it wouldn't seem that way to me. If it did it would seem like it might as well be a locker. I could certainly see how locking down the front wheels and putting the back end on a dyno or something would let the magic diff smoke out, but 26 rev's a mile? That doesn't seem like a lot of slippage for a diff to handle, and a risk I took, primarily in the name of cheapness.

Maybe I should just ebay the whole wheel set up... shame, 'cause I think they look cool. Maybe I can find a race team that discards 245-40-17's...


Kevin M 2005-11-17 02:38 AM

Dude... his wife runs a Porsche at the track, and she's smart enough to downsize her track wheels... and she's married to that clown? What a fucking world.

JC 2005-11-17 06:31 AM

I like how he not only didn't know she had bought new wheels and tires for her Porsche, but then broke it at the track. lmao

Dean 2005-11-17 08:32 AM

Why are we talking to/about this guy?

His wife: A. Owns a Porsche. B. Drives it at the track. C. Buys her own wheels/tires. D. And is probably hot!

Forget his diff, lets get some pictures of his wife and her Porsche!

cody 2005-11-17 08:37 AM

Wise words Dean.

Nick Koan 2005-11-17 08:50 AM

Quote:

Originally Posted by Dean
Why are we talking to/about this guy?

His wife: A. Owns a Porsche. B. Drives it at the track. C. Buys her own wheels/tires. D. And is probably hot!

Forget his diff, lets get some pictures of his wife and her Porsche!

http://home.comcast.net/~sporqster/

cody 2005-11-17 08:54 AM

Quote:

Originally Posted by nKoan

Well 3 out of 4 aint bad Dean. :D

Dean 2005-11-17 10:00 AM

We all could have lived on in blissful ingnorance thinking there was a Porsche driving Hottie out there, but Noooo... Nick had to go and ruin it. :lol:

MattR 2005-11-17 04:12 PM

After examining those pictures...I think they are perfect for each other...

tysonK 2005-11-17 04:21 PM

So I was right he did think it looked cool.

end.

cody 2005-11-17 04:22 PM

It does look cool...

sperry 2005-11-17 04:44 PM

Quote:

Originally Posted by cody
It does look cool...

Mismatched tire sizes only look cool on car like this:

http://www.motorsport.com/photos/f1/...uz-tm-0101.jpg

Bonus points for people that know when/where/what this picture is from (no looking at the image title!)

Also, I was under the impression that the term "stagger" only applied to left/right size difference, i.e. circle track madness.

http://www.mosport.com/photos/2002/oval-aug24-06.jpg

cody 2005-11-17 04:49 PM

They look pretty cool on AMG's and Porsche's too.

sperry 2005-11-17 04:52 PM

Quote:

Originally Posted by cody
They look pretty cool on AMG's and Porsche's too.

AMG's suck unless your looking for a luxury sled, and the "cool" Porsches are AWD. :P

Nick Koan 2005-11-17 04:56 PM

Quote:

Originally Posted by sperry
Mismatched tire sizes only look cool on car like this:

http://www.motorsport.com/photos/f1/...uz-tm-0101.jpg

Bonus points for people that know when/where/what this picture is from (no looking at the image title!)

That wouldn't. perchance, be Adelaide? would it? :lol: Australian GP of looks like Mid '90s? Benetton Renault, so I'm going to guess thats Schumacher winning the race and maybe even a championship.

AtomicLabMonkey 2005-11-17 05:02 PM

Quote:

Originally Posted by sperry
Also, I was under the impression that the term "stagger" only applied to left/right size difference, i.e. circle track madness.

That is the common usage, not front/rear.

sperry 2005-11-17 05:27 PM

Quote:

Originally Posted by nKoan
That wouldn't. perchance, be Adelaide? would it? :lol: Australian GP of looks like Mid '90s? Benetton Renault, so I'm going to guess thats Schumacher winning the race and maybe even a championship.

Nick's on point. That race was just on F1 Decade recently... cool street course, sadly not in use any longer, this was the final F1 race there. :( Which is retarded since this race had 210,000 spectators, the largest F1 crowd ever.

The race is of course the 1995 Australian GP, the final race of the 1995 season. Mika Hakkinen wrecked during friday practice, hit his head badly on the steering wheel, and had to have a tracheotomy on course to save his life! :eek: He fully recovered and went on to win the championship in later years of course.

Schumacher retired in the race, the picture is him before he collided with Jean Alesi.

Damon Hill won the race by 2 laps! D Hill was the man... I always drove his Williams in video games if it was an option. :D

Nick Koan 2005-11-17 05:30 PM

Completely guessing from the somewhat fragmented knowledge I have of mid-90's F1.

I have to say, the big ass Adelaide banner helped quite a bit.

cody 2005-11-17 05:34 PM

Quote:

Originally Posted by sperry
AMG's suck unless your looking for a luxury sled, and the "cool" Porsches are AWD. :P

I'm not saying AMG's are a good value, but I'd rather drive a C32 AMG at the track any day.

I'll get back to you later with a porsche I'd rather drive.

sperry 2005-11-17 10:02 PM

Quote:

Originally Posted by cody
I'm not saying AMG's are a good value, but I'd rather drive a C32 AMG at the track any day.

I'll get back to you later with a porsche I'd rather drive.

You'd rather drive a slower, poorer handling, uninspired looking, senses dulling Benz than a a WRX at a track day? You might convince me the Benz is a better commuter car, but I'd rather drive circles around that car in an STi at the track.

IMO there is only one cool Mercedes in production right now, but 'cause of the price, there are a ton of cars I'd rather have.

http://www.bigglook.com/biggauto/wal...rcedes_slr.jpg

And I still think it's ugly, as well as heavier and more luxurious than it should be.

cody 2005-11-17 11:19 PM

You think that's ugly? :drool:

sperry 2005-11-18 12:02 AM

Quote:

Originally Posted by cody
You think that's ugly? :drool:

It looks unbalanced and it's too busy with all the little vents and crap everywhere.

Here's what good looking cars look like:

http://perso.wanadoo.fr/20100/imgautos/xj13-2.jpg

http://www.channel4.com/4car/media/1...martin-db9.jpg

http://www.zoonie.co.uk/IMAGES/FERRA...arenello99.jpg

http://www.sikhworld.co.uk/Porsche%20images/PH17.JPG

http://ww2.chem.sc.edu/goode/SRG/a71dats.jpg

And the best looking car of all time, the original GT40, yes that's a road going version:



(and this thread needs to be split... I'll do it later unless another mod gets to it before me)

Kevin M 2005-11-18 01:59 AM

cool factoid about the "cool" porsches... the newer AWD models run different size tires and a non-1:1 center diff. Hence the madness with not being able to use most AWD dynos. Makes sense, given the Porsche penchant for taking a dumb idea and running with it far enough to build a car that goes like hell. :lol:

cody 2005-11-18 08:12 AM

I was wondering if Porsche did that. Wouldn't it work fine on any AWD dyno that doesn't attach directly to the hubs?

sybir 2005-11-18 09:54 AM

It'll work fine on any AWD dyno that has the rollers physically linked, like a Mustang. The problem comes with Dynapacks, Dynojets, etc, that use 2 rollers that aren't matched mechanically.

cody 2005-11-18 09:56 AM

Yah, I've heard that. It's a bit of a hot topic.

Nick Koan 2005-11-18 09:58 AM

Mercedes Benz makes sexy cars for sure, but why spend the money on an MBZ when a better BMW or Porsche can be had for the same price?

And the BMW or Porsche won't suffer from the same build quality that MBZ is famous for.

cody 2005-11-18 10:02 AM

True, true. I only brought it up because Aaron C, founder of WRXF has a tricked out C32 AMG with bigger tires in back, and it looks cool. Obiously tracking a MB is for the filthy rich.

Doesn't it make sense to use bigger tires in the rear of a rear engine car like a Porsche? Kevin, why do you think that's a dumb idea?

Nick Koan 2005-11-18 10:08 AM

Bigger tires in the rear induces understeer, plain and simple. No matter the drivetrain layout. Which may be helpful in an ass-heavy car like a rear-engined Porsche, but there are better ways to acomplish that goal then bigger consumable components.

cody 2005-11-18 10:09 AM

Like what?

Nick Koan 2005-11-18 10:20 AM

Suspension mainly. Stiffer anti-sway bar up front. Slightly softer springs in the rear (or would you want harder? I can't remember).

And at design time: move some of the weight up front, for as close to 50/50 distribuition as you can get.

Mismatched tire sizes are more or less for old school drag racing muscle cars. On anything else makes the driver look kinda foolish (no offense to the founder of WRXF or anyone who's cars came that way).

cody 2005-11-18 10:21 AM

Quote:

Originally Posted by nKoan
On anything else makes the driver look kinda foolish (no offense to the founder of WRXF or anyone who's cars came that way).


:lol:

Nick Koan 2005-11-18 10:22 AM

Quote:

Originally Posted by cody
LOL

care to share with the rest of the class?

cody 2005-11-18 10:24 AM

Sorry let me fix it.

JC 2005-11-18 10:45 AM

Quote:

Originally Posted by nKoan
Mismatched tire sizes are more or less for old school drag racing muscle cars. On anything else makes the driver look kinda foolish (no offense to the founder of WRXF or anyone who's cars came that way).

I dunno, if you have a RWD car that can't put it's power down around turns (ala a Viper) it makes perfect sense. It would be stupid to run 335s all around, but you need the rubber out back.

Nick Koan 2005-11-18 10:52 AM

Quote:

Originally Posted by JC
I dunno, if you have a RWD car that can't put it's power down around turns (ala a Viper) it makes perfect sense. It would be stupid to run 335s all around, but you need the rubber out back.

Yeah, I was thinking more normal street cars. When you start talking about muscle cars or 10cyl+ RWD exotics (the drag racing part should probably be stricken from my qualifer), I agree.

AtomicLabMonkey 2005-11-18 12:34 PM

Quote:

Originally Posted by nKoan
And at design time: move some of the weight up front, for as close to 50/50 distribuition as you can get.

For a car like the 911 this isn't really an option though; it would require changing the layout of the entire car, and then it wouldn't be a 911 anymore.

(Random tidbit: an ideal performance weight distribution is usually something more like 40F/60R to 45F/55R, instead of 50/50)


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